1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Lubov Fominskaja [6]
2 years ago
9

A family of four lives in a three-bedroom house and uses an average of 900 kWh of electricity per month. The family cools their

house for three months during the summer with two window-unit air conditioners that each use 350 kWh of electricity per month. Which of the following is the percentage of the family’s total annual electricity that is used to run the two air conditioners for the three summer months?
9,7%

19.4%

38.8%

77.8%
Chemistry
1 answer:
agasfer [191]2 years ago
5 0
<h2>Answer:</h2><h2>The percentage of the family’s total annual electricity that is used to run the two air conditioners for the three summer months = 19.4 %</h2>

Explanation:

Average electricity consumed per month = 900 kWh

The family cools their house for three months during the summer with two window-unit air conditioners

The power consumed by one window-unit air conditioners = 350 kWh

The power consumed by two window-unit air conditioners = 350(2) = 700 kWh

Power consumed for two air conditioners for the three summer months = 700 (3) = 2100 kWh

Total power consumed for 1 year = 900 (12) = 10800kWh

The percentage of the family’s total annual electricity that is used to run the two air conditioners for the three summer months = \frac{2100}{10800}100 = 19.4 %

You might be interested in
Which of the following explains how Hahn, Strassman, and Meitner tried to
attashe74 [19]

Answer is: A. They opposed the use of energy released during nuclear fission for military purposes.

Hahn, Strassmann and Meitner were not engaged in nuclear weapons research during World War II.

Otto Hahn (1879 - 1968) became a passionate campaigner against the use of nuclear energy as a weapon.

Hahn and Strassmann discovered nuclear fission (nuclear fission of uranium in 1939).

5 0
3 years ago
Read 2 more answers
*Will give Brainliest* What is the average atomic mass of one molecule of methane, which has one 12C atom and four 1H atoms?
Nesterboy [21]

Answer:

The atomic mass of methane (CH4)is 12 amu for the carbon plus 4 x 1 amu for the four hydrogens, for a total of 16 amu. Therefore, the molar mass of methane is 16g.

5 0
3 years ago
How many atoms are present in 0.35 mol of carbon dioxide?
STatiana [176]
0.35 moles carbon dioxide (6.022 X 10^23/1 mole CO2) = 2.1 X 10^23 atoms of
<span> carbon dioxide </span>
6 0
2 years ago
Read 2 more answers
Is the amount of water on earth always changing or is it a constant amount?​
Zolol [24]

Answer:

The amount of water on the Earth is constant, or nearly so. Actually, the amount is increasing ever so slightly due to volcanic eruptions expelling water vapor into the atmosphere, but, for all practical purposes, the amount of water (as a gas, liquid and as snow and ice) can be considered to be constant.

Explanation:

4 0
2 years ago
Read 2 more answers
She put on her coat and went out <br>what type of sentence is this ​
Zinaida [17]

Answer:

this is an example of a Simple sentence

3 0
3 years ago
Read 2 more answers
Other questions:
  • Can someone help me with this???​
    9·1 answer
  • 1. Most fruit juices are a solution of water, sugar, and fruit-specific chemicals. In this solution, identify the solvent and so
    14·1 answer
  • If 4 mol 02 are used , how many moles of h2 are needed. please show work
    12·1 answer
  • Estimate the optimal number of neutrons for a nucleus containing 70 protons.
    6·2 answers
  • A household variety of coal is
    10·1 answer
  • On a graph showing distance versus time, a horizontal line represents an object that is
    10·1 answer
  • Answer correctly please
    9·1 answer
  • Climate change is ONLY caused by human activities<br> OTrue<br> O False
    7·1 answer
  • Calculate the Molarity when 14.6 g Ethanol (C2H5OH) is dissolved in a 2.10 L solution.
    12·1 answer
  • A chemist want to prepare a solution containing (soluble) silver ions. Which salt should they use? silver nitrate AgCI AgOH silv
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!